CN217716907U - Novel pneumatic program-controlled overload test system - Google Patents

Abstract

The utility model provides a novel pneumatic programme-controlled overload test system, including workstation (1), establish power device (2), decelerator (3), controlling means (5), motion final controlling element (4) and torque sensor (6) on workstation (1), the output of power device (2) is connected with the input of decelerator (3), the sensor cover is established on the output of decelerator (3), the output and the motion final controlling element (4) of decelerator (3) are connected, power device (2) order about motion final controlling element (4) through decelerator (3) and move, power device (2) and torque sensor (6) are even with controlling means (5) electricity. The utility model discloses can test the stopper to can save manual operation time, promote the operational safety, improve efficiency of software testing.

Description

Novel pneumatic program-controlled overload test system

Technical Field

The utility model belongs to the technical field of the automobile parts test technique and specifically relates to a novel pneumatic programme-controlled overload test system is related to.

Background

At present, with the development of science and technology, the living standard of people is improved, and the requirement on the service performance of the vehicle door limiter is higher and higher; and the limiter overload test is an important test item for performance judgment.

The stopper overload test device of prior art needs to carry out manual operation in the use and adds the adjustment in advance, and the time of consuming is longer, and the power value is exerted to the operation process is unstable, and the operation is hard, has certain safety risk when being close maximum overload moment, can be because of stopper destroy or cause personnel because of inertia health unbalance after the fracture. And along with the car door spacing ware overload performance requirement is higher and higher, the operating torque value that the relevant operation needs also increases thereupon, and the stability is difficult to handle the accuse to the manual operation control of measurement personnel, therefore how to improve detection efficiency, reasonable live time and promote the operation security performance and mention the design level.

Work efficiency, security guarantee, the manual operation time of saving when examining time measuring, shortening the arm of force, saving equipment frock occupation space when fully considering measuring personnel operation in the design of novel pneumatic programme-controlled overload test platform to can improve production efficiency, protect operating personnel security performance, reach anticipated effect. Therefore, a new technical solution is needed to solve at least one of the above problems.

Disclosure of Invention

The utility model aims at providing a novel pneumatic programme-controlled overload test system can test the stopper to can save manual operation time, promote the operational safety, improve efficiency of software testing.

In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: the utility model provides a novel programme-controlled overload test system of pneumatics, includes the workstation, establishes power device, decelerator, controlling means, motion final controlling element and the torque sensor on the workstation, power device's output is connected with decelerator's input, the torque sensor cover is established on decelerator's output, decelerator's output and motion final controlling element are connected, power device orders about the motion final controlling element through decelerator and moves, power device and torque sensor are even with the controlling means electricity.

Preferably, the power device comprises a plunger type pneumatic motor, a solenoid valve and an air source, wherein the output end of the pneumatic motor is connected with the input end of the speed reducer, a first inlet of the solenoid valve is connected with the air source through a pipeline, an outlet of the solenoid valve is connected with the inlet of the pneumatic motor through a pipeline, a second inlet of the solenoid valve is connected with the outlet of the pneumatic motor through a pipeline, and the solenoid valve is electrically connected with the control device.

As the preferred technical scheme, the movement executing device comprises a rotating shaft, a rotating plate fixedly sleeved on the rotating member, a pulling plate fixedly arranged on the rotating plate, and a fixed plate, wherein the rotating shaft is rotatably inserted on the fixed plate, the fixed plate is fixedly connected with the workbench, and the output end of the speed reducing device is fixedly connected with the rotating shaft.

As the preferred technical scheme, the workbench comprises a rack and a support, the support is detachably arranged at the upper end of the rack, and the fixing plate is fixedly connected with the support.

According to a preferable technical scheme, the support comprises an upper plate, a bottom plate and a support plate fixedly arranged between the upper plate and the bottom plate, the support plate is fixedly connected with the upper plate, the bottom plate is fixedly connected with the support plate, and the bottom plate is fixedly connected with the rack.

As the preferred technical scheme, the fixed plate includes the first plate body, establishes the first axle sleeve in first plate body towards pivot one side, first axle sleeve links to each other with first plate body and becomes integrative structure, the pivot is rotatable to be inserted and is established in first axle sleeve, the commentaries on classics board includes the second plate body, establishes the second axle sleeve in second plate body towards pivot one side, the pivot is fixed to be inserted and is established in the second axle sleeve.

According to a preferable technical scheme, the speed reducing device comprises a planetary gear box, a first harmonic speed reducer and a second harmonic speed reducer, wherein an output end of the planetary gear box is connected with an input end of the first harmonic speed reducer, an output end of the first harmonic speed reducer is connected with an input end of the second harmonic speed reducer, and an output end of the second harmonic speed reducer is connected with the rotating shaft.

As a preferred technical scheme, a scale plate is arranged at the upper end of the upper plate and is fixedly connected with the upper plate, and a pointer is arranged at the lower end of the rotating plate and is fixedly connected with the rotating plate.

As a preferred technical scheme, the rack comprises a table board and 4 supporting legs arranged at the bottom end of the table board, and the supporting legs are fixedly connected with the table board.

As the preferred technical scheme, the bottom end of each supporting foot is fixedly connected with a universal wheel.

The beneficial effects of the utility model are that:

1) The labor intensity of operators is relieved through the control device, the automation level is improved, the motion execution device is provided with the limiting device, the power device drives the motion execution device to move through the speed reducer, so that the limiting housing is pulled to move, the torque sensor collects torque information and feeds the torque information back to the control system, and therefore whether the torque of the limiting device can reach the maximum preset overload requirement value or not can be tested, the testing effect is good, the detection working efficiency and the use safety of operation of detection personnel are greatly improved, and good economic and social benefits are achieved;

2) Preferably, the device has the advantages of low noise, long service life, high power, variable current and the like;

3) Preferably, the fixed plate is used for installing the limiter, and the rotating plate pulls the limiting housing to move along the pulling plate, so that the structure is practical and the operation effect is good;

4) Preferably, the harmonic reducer has stable transmission, no impact, low noise and high motion precision;

5) Preferably, the pointer indicates the scale on the scale plate, so that the rotation angle of the rotating shaft can be observed, and the opening angle of the stopper can be obtained;

6) Preferably, the rack with the universal wheels is convenient to move, the labor intensity is reduced, and the use is more flexible.

Drawings

Fig. 1 is a three-dimensional view of an embodiment provided by the present invention;

FIG. 2 is a three-dimensional view in another orientation of FIG. 1;

fig. 3 is a view illustrating the installation of the stopper according to an embodiment of the present invention;

FIG. 4 is a view of the pivot mounting of one embodiment provided by the present invention;

fig. 5 is a structural diagram of a rotating plate according to an embodiment of the present invention;

fig. 6 is a three-dimensional view of a rotating plate according to an embodiment of the present invention;

fig. 7 is a three-dimensional view of a fixation plate according to an embodiment of the present invention;

in fig. 1-7, 1, a table; 101. a rack; 1011. a table top plate; 1012. supporting legs; 1013. a sub-board; 1014. a universal wheel; 102. a support; 1021. an upper plate; 1022. a base plate; 1023. a support plate; 2. a power plant; 201. a pneumatic motor; 202. an electromagnetic valve; 203. a gas source; 3. a reduction gear; 301. a planetary gear box; 302. a first harmonic reducer; 303. a second harmonic reducer; 4. a motion execution device; 401. a rotating shaft; 402. rotating the plate; 4021. a second plate body; 4022. a second shaft sleeve; 403. pulling a plate; 4031. passing through a groove; 404. a fixing plate; 4041. a first plate body; 4042. a first bushing; 5. a control device; 501. a control panel; 502. a data display screen; 503. a forward button; 504. a reverse button; 505. a reset button; 6. a torque sensor; 7. a coupling; 8. a scale plate; 9. a pointer; A. a stopper; a1, a pull rod; a2, mounting; a3, limiting a housing; a4, a sliding block.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1-7, a novel pneumatic program-controlled overload testing system includes a workbench 1, a power device 2, a speed reducer 3, a control device 5, a motion executing device 4 and a torque sensor 6, which are disposed on the workbench 1, wherein an output end of the power device 2 is connected to an input end of the speed reducer 3, the torque sensor 6 is sleeved on an output end of the speed reducer 3, an output end of the speed reducer 3 is connected to the motion executing device 4, the power device 2 drives the motion executing device 4 to move through the speed reducer 3, the power device 2 and the torque sensor 6 are electrically connected to the control device 5, the workbench 1 provides a stable carrier for the power device 2, the speed reducer 3, the torque sensor 6, the control device 5 and the motion executing device 4, the torque sensor 6 collects torque at the output end of the speed reducer 3 and feeds back to the control device 5, a data display screen 502 is disposed on the control device 5, the data display screen 502 displays torque data, the control device 5 controls the power device 2 to be turned on, and drives the motion executing device 4 to move through the speed reducer 3, so that an operation device a switching motion is operated, a switching operation is simple, a test efficiency is good, a test effect is good, and a test effect is high.

Stopper A includes pull rod A1, rotates and establishes mounting bracket A2, spacing housing A3 and the slider A4 at pull rod A1 head end, and stopper A tail end is equipped with T type detent, is provided with the pressure spring in the slider A4, and pull rod A1's surface is the wave, pulling pull rod A1, and slider A4 moves along pull rod A1's surface, because the compression effect of pressure spring, produces pressure, and slider A4 forms spacingly with the surperficial wave-shaped surface cooperation of arm-tie 403.

As shown in fig. 1-7, in other embodiments, the power device 2 includes a plunger type pneumatic motor 201, a solenoid valve 202, and an air source 203, an output end of the pneumatic motor 201 is connected to an input end of the reduction gear 3, a first inlet of the solenoid valve 202 is connected to the air source 203 through a pipeline, an outlet of the solenoid valve 202 is connected to an inlet of the pneumatic motor 201 through a pipeline, a second inlet of the solenoid valve 202 is connected to an outlet of the pneumatic motor 201 through a pipeline, the solenoid valve 202 is electrically connected to the control device 5, the plunger type motor has the advantages of low noise, long service life, high power, variable flow, etc., and the control device 5 controls the solenoid valve 202 to open and close by changing the air intake and exhaust directions, thereby realizing the forward and reverse directions of the pneumatic motor 201.

As shown in fig. 1 to fig. 7, in some other specific embodiments, the motion executing apparatus 4 includes a rotating shaft 401, a rotating plate 402 fixedly sleeved on the rotating member, a pulling plate 403 fixedly disposed on the rotating plate 402, and a fixing plate 404, the rotating shaft 401 is rotatably inserted into the fixing plate 404, the fixing plate 404 is fixedly connected to the workbench 1, an output end of the speed reducing apparatus 3 is fixedly connected to the rotating shaft 401, the rotating shaft 401 is fixedly connected to the rotating plate 402 through a key pin, a through groove 4031 is disposed on the pulling plate 403, the pulling plate 403 passes through the through groove 4031, one end of the through groove 4031 penetrates through an end of the pulling plate 403, which is away from the rotating plate 402, so that the pulling plate 403 enters the through groove 4031, an output end of the speed reducing apparatus 3 is fixedly connected to the rotating shaft 401 through a thread, and the power apparatus 2 drives the rotating shaft 401 to rotate through the speed reducing apparatus 3, thereby driving the rotating plate 402 to rotate, the limiting housing A3 is mounted on the pulling plate 403, the pulling plate 403 rotates along with the rotating plate 402, thereby driving the limiting housing A3 to move, a slider A4 in the limiting housing A3 moves along a surface on the pulling rod A1, and at the same time, thereby the angle of the limiting housing a test is not subject to the opening angle of the wave.

Further, the fixed plate 404 includes a first plate 4041, a first sleeve 4042 disposed on one side of the first plate 4041 facing the rotating shaft 401, the first sleeve 4042 and the first plate 4041 are connected into an integral structure, the rotating shaft 401 is rotatably inserted into the first sleeve 4042, the rotating plate 402 includes a second plate 4021 and a second sleeve 4022 disposed on one side of the second plate 4021 facing the rotating shaft 401, the rotating shaft 401 is fixedly inserted into the second sleeve 4022, the first sleeves 4042 are 2 in number, the second sleeves 4022 are 2 in number, the 2 second sleeves 4022 are respectively disposed on the upper portion and the lower portion of the second plate 4021 facing the rotating shaft 401, the 2 first sleeves 4042 are disposed between the 2 second sleeves 4022, the first sleeves 4042 and the second sleeves 4022 limit the rotating shaft 401, the first sleeves 4042 and the second sleeves 4022 do not interfere with each other during rotation, and the overall operation stability is better.

As shown in fig. 1-7, in some other embodiments, the workbench 1 includes a rack 101, a support 102, the support 102 is detachably disposed at an upper end of the rack 101, the fixing plate 404 is fixedly connected to the support 102, further, the support 102 includes an upper plate 1021, a bottom plate 1022, and a support plate 1023 fixedly disposed between the upper plate 1021 and the bottom plate 1022, the support plate 1023 is connected to the upper plate 1021 by bolts, the bottom plate 1022 is connected to the support plate 1023 by bolts, the bottom plate 1022 is connected to the rack 101 by bolts, a torque sensor 6 is disposed between the upper plate 1021 and the rack 101, the torque sensor 6 is connected to the bottom plate 1022 by bolts, the upper plate 1021, the rack 101, and the bottom plate 1022 are respectively provided with a through mounting hole, an output end of the speed reduction device 3 passes through each mounting hole and then is fixedly connected to the rotating shaft 401, the support 102 is added to the rack 101 for mounting the motion executing device 4 and raising the motion executing device 4, so that the torque sensor 6 is disposed between the rack 101 and the upper plate 1021 to facilitate observation of a state of the torque sensor 6, to achieve better axial fastening effect, and better connection of the connection, and the connection of the support plate 1022, and the support plate 1023, and the support plate can be more convenient for dismounting and dismounting of the upper plate and the support plate 1023.

As shown in fig. 1 to 7, in some other specific embodiments, the speed reducer 3 includes a planetary gear box 301, a first harmonic reducer 302, and a second harmonic reducer 303, an output end of the planetary gear box 301 is connected to an input end of the first harmonic reducer 302, an output end of the first harmonic reducer 302 is connected to an input end of the second harmonic reducer 303, an output end of the second harmonic reducer 303 is connected to a rotating shaft 401, and the planetary gear box 301 constitutes a first-stage speed reduction with a speed reduction ratio of 1:30, after the first harmonic reducer 302 and the second harmonic reducer 303 are combined, the reduction ratio reaches 1.

Further, the upper end and the lower end of the torque sensor 6 are provided with couplings 7, the coupling 7 at the upper end is connected with the rotating shaft 401 through a key, the coupling 7 at the lower end is connected with the output end of the second harmonic reducer 303, and the coupling 7 improves the connection stability.

As shown in fig. 1 to 7, in some other embodiments, a scale plate 8 is disposed at an upper end of the upper plate 1021, the scale plate 8 is fastened to the upper plate 1021, a pointer 9 is fastened to a lower end of the rotating plate 402, a scale in the middle of the scale plate 8 is 0 °, and a maximum scale on two sides of the scale plate is 90 °, so as to indicate a rotation angle of the rotating plate 402, thereby obtaining an opening angle of the stopper a, which is more intuitive and more convenient to observe.

As shown in fig. 1-7, in other embodiments, the gantry 101 includes a table 1011, 4 support legs 1012 disposed at a bottom end of the table 1011, the support legs 1012 are fixedly connected to the table 1011, further, a universal wheel 1014 is fixedly connected to a bottom end of each of the support legs 1012, a sub-plate 1013 is fixedly connected to a lower end of the table 1011, and the solenoid valve 202 and the air source 203 are mounted on the sub-plate 1013.

As shown in fig. 1 to 7, the control device 5 includes an operation panel, a data display 502, and a programmable controller disposed inside the control device 5, the operation panel is provided with a forward button 503, a reverse button 504, and a reset button 505, the forward button 503 is green, and the reverse button 504 and the reset button 505 are red.

Examples

A novel pneumatic program control overload test system comprises a workbench 1, a power device 2 arranged on the workbench 1, a speed reduction device 3, a control device 5, a motion execution device 4 and a torque sensor 6, wherein the workbench 1 comprises a rack 101 and a support 102, the rack 101 comprises a platform 1011 and 4 support legs 1012 arranged at the bottom end of the platform 1011, the support legs 1012 are fixedly connected with the platform 1011, the bottom end of each support leg 1012 is fixedly connected with a universal wheel 1014, the support 102 comprises an upper plate 1021, a bottom plate 1022 and a support plate 1023 fixedly arranged between the upper plate 1021 and the bottom plate 1022, the support plate 1023 is fixedly connected with the upper plate 1021 through bolts, the bottom plate 1022 is fixedly connected with the rack 101 through bolts, the lower end of the platform 1011 is fixedly connected with a sub-plate 1013, the power device 2 comprises a pneumatic plunger type motor 201, an electromagnetic valve 202 and an air source 203, the first inlet of the electromagnetic valve 202 is connected with the air source 203 through a pipeline, the outlet of the electromagnetic valve 202 is connected with the inlet of the pneumatic motor 201 through a pipeline, the second inlet of the electromagnetic valve 202 is connected with the outlet of the pneumatic motor 201 through a pipeline, the electromagnetic valve 202 is electrically connected with the control device 5, the electromagnetic valve 202 and the air source 203 are installed on the sub-plate 1013, the speed reducer 3 comprises a planetary gear box 301, a first harmonic speed reducer 302 and a second harmonic speed reducer 303, the output end of the planetary gear box 301 is connected with the input end of the first harmonic speed reducer 302, the output end of the first harmonic speed reducer 302 is connected with the input end of the second harmonic speed reducer 303, the output end of the second harmonic speed reducer 303 is connected with a rotating shaft 401, the movement executing device 4 comprises a rotating shaft 401, a rotating plate 402 fixedly sleeved on the rotating part, a pulling plate 403 fixedly arranged on the rotating plate 402 and a fixing plate 404, the rotating shaft 401 is rotatably inserted on the fixing plate 404, fixed plate 404 and workstation 1 fixed connection, the output and the pivot 401 fixed connection of decelerator 3, fixed plate 404 includes first plate body 4041, establish at first plate body 4041 towards the first shaft cover 4042 of pivot 401 one side, first shaft cover 4042 links up an organic whole structure with first plate body 4041, pivot 401 is rotatable to be inserted and is established in first shaft cover 4042, commentaries on classics board 402 includes second plate body 4021, establish at second shaft cover 4022 of second plate body 4021 towards pivot 401 one side, pivot 401 with pass through the key pin connection at second shaft cover 4022, upper plate 1021 upper end is provided with scale plate 8, scale plate 8 passes through bolt-up with upper plate 1021, commentaries on classics board 402 lower extreme is equipped with pointer 9, pointer 9 passes through bolt-up with commentaries on classics board 402, torque sensor 6 cover is established on the output of second harmonic speed reducer 303, pneumatic motor 201, solenoid valve 202 and torque sensor 6 are connected with controlling means 5 electricity, controlling means 5 includes operating panel, data display 502, establish the controller in controlling means 5 is inside, operating panel is equipped with forward button 505, reset button 505.

Working process of the embodiment: firstly, switching on a power supply and an air source 203, and inputting a moment value required to be loaded by overload test of a preset limiter A through a control panel 501, namely a maximum preset overload requirement value; secondly, pressing a forward button 503 to start forward rotation or pressing a reverse button 504, starting the rotating plate 402 to a preset stopper A mountable angle, assembling and fixing a corresponding stopper A assembly by using bolts and nuts according to the condition of the initial angle of the stopper A in forward rotation or reverse rotation operation, and then pressing a reset button 505 to restore the tool starting angle to the 0-degree position; and thirdly, pressing a forward button 503 to operate the tool to open and rotate so as to apply a certain amount of torque value, when the limiter A is opened to a maximum angle, the torque value is gradually increased until the maximum preset overload requirement value of the limiter A is reached, then the torque sensor 6 transmits numerical information to a programmable controller in the control device 5 through a cable, the programmable controller compares the maximum preset overload requirement value and sends an instruction to the electromagnetic valve 202 to stop the loading motion of the motion execution device 4, the process is about 0.5 second, the loading work is finished, the overload performance test is completed, at the moment, the data display screen 502 of the operation panel displays captured and recorded data, the peak value when the limiter A reaches the overload requirement is displayed, the data of the data display screen 502 can be judged by visual observation, when the limiter A is opened to reach the maximum angle to apply the overload load, the torque value does not reach the maximum preset overload requirement value, the torque sensor 6 senses the data value and loses the phenomenon in a cliff type, at the moment, the numerical signal is transmitted to the programmable controller, the programmable controller compares the range of the variable power torque value, releases the working signal, and the electromagnetic valve 202 stops working signal to record the electromagnetic valve 202 after the data is recorded.

The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.

Claims (10)

1. The utility model provides a novel pneumatic programme-controlled overload test system which characterized in that, includes workstation (1), establishes power device (2), decelerator (3), controlling means (5), motion final controlling element (4) and torque sensor (6) on workstation (1), the output of power device (2) is connected with the input of decelerator (3), the sensor cover is established on the output of decelerator (3), the output and the motion final controlling element (4) of decelerator (3) are connected, power device (2) order about motion final controlling element (4) through decelerator (3) and move, power device (2) and torque sensor (6) are even with controlling means (5) electricity.

2. A novel pneumatic program-controlled overload testing system according to claim 1, wherein the power device (2) comprises a plunger type pneumatic motor (201), a solenoid valve (202) and an air source (203), the output end of the pneumatic motor (201) is connected with the input end of the speed reducer (3), the first inlet of the solenoid valve (202) is connected with the air source (203) through a pipeline, the outlet of the solenoid valve (202) is connected with the inlet of the pneumatic motor (201) through a pipeline, the second inlet of the solenoid valve (202) is connected with the outlet of the pneumatic motor (201) through a pipeline, and the solenoid valve (202) is electrically connected with the control device (5).

3. The novel pneumatic program-controlled overload testing system according to claim 1, wherein the motion executing device (4) comprises a rotating shaft (401), a rotating plate (402) fixedly sleeved on the rotating member, a pulling plate (403) fixedly arranged on the rotating plate (402), and a fixing plate (404), the rotating shaft (401) is rotatably inserted into the fixing plate (404), the fixing plate (404) is fixedly connected with the workbench (1), and the output end of the speed reducing device (3) is fixedly connected with the rotating shaft (401).

4. A novel pneumatic program-controlled overload testing system according to claim 3, wherein the workbench (1) comprises a rack (101) and a bracket (102), the bracket (102) is detachably arranged at the upper end of the rack (101), and the fixing plate (404) is fixedly connected with the bracket (102).

5. A novel pneumatic program-controlled overload testing system according to claim 4, wherein the bracket (102) comprises an upper plate (1021), a bottom plate (1022), and a support plate (1023) fixedly arranged between the upper plate (1021) and the bottom plate (1022), the support plate (1023) is fixedly connected with the upper plate (1021), the bottom plate (1022) is fixedly connected with the support plate (1023), and the bottom plate (1022) is fixedly connected with the rack (101).

6. A novel pneumatic program-controlled overload testing system according to claim 3, wherein the fixing plate (404) includes a first plate (4041) and a first bushing (4042) disposed on one side of the first plate (4041) facing the rotating shaft (401), the first bushing (4042) and the first plate (4041) are connected to form an integral structure, the rotating shaft (401) is rotatably inserted into the first bushing (4042), the rotating plate (402) includes a second plate (4021) and a second bushing (4022) disposed on one side of the second plate (4021) facing the rotating shaft (401), and the rotating shaft (401) is fixedly inserted into the second bushing (4022).

7. A novel pneumatic program-controlled overload testing system according to claim 3, wherein the speed reducer (3) comprises a planetary gear box (301), a first harmonic reducer (302) and a second harmonic reducer (303), the output end of the planetary gear box (301) is connected with the input end of the first harmonic reducer (302), the output end of the first harmonic reducer (302) is connected with the input end of the second harmonic reducer (303), and the output end of the second harmonic reducer (303) is connected with the rotating shaft (401).

8. A novel pneumatic program-controlled overload testing system according to claim 5, wherein a scale plate (8) is arranged at the upper end of the upper plate (1021), the scale plate (8) is fixedly connected with the upper plate (1021), a pointer (9) is arranged at the lower end of the rotating plate (402), and the pointer (9) is fixedly connected with the rotating plate (402).

9. A novel pneumatic program-controlled overload testing system according to claim 4, wherein the gantry (101) comprises a table board (1011), and 4 supporting legs (1012) arranged at the bottom end of the table board (1011), and the supporting legs (1012) are fixedly connected with the table board (1011).

10. The new pneumatic programmable overload testing system according to claim 9, wherein a universal wheel (1014) is fixedly connected to the bottom end of each supporting foot (1012).

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